LG FLATRON L1520B User Manual

13
2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS
CHECK MICOM INV
ON/OFF PORT.
(U501 PIN9)
J707 PIN2
2.5V?
NO
NO RASTER
(OSD IS NOT DISPLAYED)
CHECK LIPS
J707
PIN5, PIN 6
5V?
NO
1. CONFIRM BRIGHTNESS
OSD CONTRL STATE.
2. CHECK MICOM DIM-ADJ
PORT(U501 PIN41)
J707 PIN1
5V?
NO
LIPS
CHECK
PULSE AS
CONTACTING SCOPE
PROBE TO CAUTION LABEL.
(CONTACT PROBE TO
CAUTION LABEL.
CAN YOU SEE PULSE
AT YOUR
SCOPE?
NO
REPLACE CCFL LAMP
IN THE LCD MODULE
YES
YES
YES
YES
3 4
Waveforms
J707-#2 J707-#2
1
3 4
Inverter Off
Micom Port check
J705 Inverter output
Inverter On
Micom Port check
J705 Inverter output
1
J707-#5, 6 / U801-#1/U803-#3

LG FLATRON L1520B Specifications

General

Brand	LG
Model	FLATRON L1520B
Category	Monitor
Language	English